package main

import "fmt"

func main() {
	for num := 7; num < 100; num++ {
		n2 := num / 10 % 10 //十位数
		n3 := num % 10      //个位数

		//判断
		if n2 == 7 || n3 == 7 {
			fmt.Println(num)
		}
	}
}
